Juncus gerardii |
Juncus anthelatus |
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black needle rush, blackgrass, blackgrass rush, Gerard's rush, saltmarsh rush, saltmeadow rush |
giant path rush, greater poverty rush, Kentucky or poverty rush, Kentucky rush, poverty rush, Wiegand's rush |
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Habit | Herbs, perennial, 2–9 dm. | Herbs, perennial, cespitose, to (3–)7–9 dm. |
Rhizomes | long- creeping. |
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Cataphylls | 1–3. |
1–2. |
Leaves | basal, (1–)2–4; auricles 0.4–0.6(–0.8) mm, scarious; blade flat or somewhat channeled, 10–40 cm × 0.4–0.7 mm, margins entire. |
basal, 2–3(–5); auricles transparent, 2–3.5 mm at summit of leaf sheath, apex acutish, membranous; blade flat, (10–)20–30 cm × 0.5–2.3 mm, margins entire. |
Inflorescences | 10–30(–80)-flowered, usually loose and somewhat lax, 2–16 cm; primary bract rarely surpassing inflorescence. |
10–100-flowered, diffuse; internodes of monochasia greater than 6 mm, primary bract usually exceeding inflorescence. |
Flowers | bracteoles 2; tepals dark brown or blackish, lanceolate-ovate to oblong, 2.6–3.2(–3.8) mm; inner and outer series nearly equal, apex obtuse; stamens 6, filaments 0.4–0.7 mm, anthers 1.1–1.6(–1.8) mm; style 0.4 mm. |
pedicels 0.1–0.3(–3) mm; bracteoles 2; tepals green, lanceolate, 3.2–4.5 × 0.7–1 mm; outer and inner series nearly equal, in fruit apically erect; stamens 6, filaments 0.8–1.1 mm, anthers 0.3–0.7 mm; style 0.2 mm. |
Capsules | chestnut brown or brown, 3-locular, widely ellipsoid, (2.2–)2.5–3.2(–3.5) × 1.3–1.9 mm. |
tan, 1-locular, widely ellipsoid to obovoid, 2–3.2 × 1.1–1.6 mm. |
Seeds | dark brown, ellipsoid to lunate, 0.485–0.6(–0.67) mm, not tailed. |
tan, ellipsoid, 0.33–0.556 mm, not tailed. |
2n | = ca. 80, 84. |
= 80. |
Juncus gerardii |
Juncus anthelatus |
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Phenology | Flowering and fruiting late spring–summer. | Flowering and fruiting spring. |
Habitat | Forming extensive colonies in exposed coastal estuary meadows and salt marshes just above high- tide line, also inland | Exposed or partially shaded sites in moist or seasonally wet, sandy or clay soils |
Distribution |
CO; CT; DE; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; MT; ND; NH; NJ; NY; OH; OR; OR; PA; RI; UT; VA; VT; WA; WI; BC; MB; NB; NF; NS; ON; PE; QC; SPM; Greenland; Europe; Asia
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AK; AL; AR; AZ; CA; CO; CT; DC; DE; FL; GA; IA; ID; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NV; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; ON; PE; QC; SK; YT
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Juncus > subg. Poiophylli | Juncaceae > Juncus > subg. Poiophylli |
Sibling taxa | ||
Synonyms | J. bulbosus var. gerardii, J. fucensis, J. gerardii var. pedicellatus | J. tenuis var. anthelatus, J. macer var. anthelatus |
Name authority | Loiseleur-Deslongchamps: J. Bot. (Desvaux) 2: 284. (1809) | (Wiegand) R. E. Brooks: Novon 9: 11. (1999) |
Web links |
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